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INCOME TAXES - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Deferred tax assets:    
Pension and other postretirement liabilities $ 30,517 $ 22,632
Rationalization and other accrued liabilities 30,105 23,038
AMT and other credit carryforwards 2,885 3,802
Net operating loss carryforwards 49,882 34,792
Other intangible assets 2,464 5,251
Foreign currency translation 281 246
Inventory and related reserves 21,584 26,677
Long term operating lease liabilities 54,218 48,889
Other 7,135 5,265
Total deferred tax assets 199,071 170,592
Deferred tax liabilities:    
Property, plant and equipment (233,109) (195,039)
Pension and other postretirement liabilities (24,316) (25,016)
Other intangible assets (187,269) (112,680)
Operating lease right of use assets (51,902) (46,709)
Other (8,770) (6,258)
Total deferred tax liabilities (505,366) (385,702)
Valuation allowance (20,624) (15,025)
Net deferred tax liabilities $ (326,919) $ (230,135)